Proof Research Stainless Steel Blank | .30 | 28" | Competition

Proof Research Stainless Steel Blank | .30 | 28" | Competition

MPN:
113660
$400.00
$449.00
(You save $49.00 )
(1 review)
Width:
4.00 (in)
Height:
36.00 (in)
Depth:
4.00 (in)
Current Stock:
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Description

Proof Research Stainless Steel Blank

Caliber: .30

Length: 28

Contour: Competition

Proof make their steel barrels in-house with the exact same commitment to quality and repeatability as employ on the carbon fiber barrels. The drilling, rifling, and lapping process is identical to the composite barrels.  They start with the same steel as used in the carbon fiber barrels.  It is a double stress-relieved 416R stainless steel, a pre-hardened chromium stainless steel that was specifically designed by engineers in collaboration with rifle barrel makers to provide the consistent, high quality and durability the firearms industry demands.

Excellent machinability for gun drilling and reaming, plus exceptional polishability for uniform lapping


A homogeneous microstructure which responds to heat treatment providing a uniform hardness along the length of the barrel


An optimum combination of high tensile strength along with requisite toughness to withstand extreme chamber pressures encountered during firing


Excellent erosion wear characteristics and corrosion resistance

 

Additional Information
Barrel Contour:
Competition
Barrel Length:
28in
Manufacturer:
PROOF Research
Material:
Steel
Caliber:
.30 (7.62mm)
Shank Diameter:
1.25

Reviews

  • 5
    Great Barrel

    Posted by MPGW on Apr 5th 2022

    Steel machines easily. Customer went out and shot a 0.3 moa 5 round group with 175g bullets out of a 308. He is happy so I am happy.